Hologram breaks tests: could not read file /_build/test/lib/hologram/priv/page_digest.plt": no such file or directory

The page_digest.plt file is automatically generated every time the Hologram compiler runs, so this shouldn’t happen with a correct installation.

Could you create a GitHub repo that reproduces the problem? A fork of hologram_skeleton would work well for this. Without seeing the full setup, it’s hard to say what’s going wrong.